CODEWITHSUNDEEP
iosobjective-cswiftbridging-header
Marcus
Marcus

Reputation: 9472

Swift Bridging-Header Objective-C presentViewController

I'm trying to use a view controller that is only available in Objective-C. I have set up my Bridging-Header, but when I run my method it doesn't include a presentViewController and gives the error No visible @interface for 'AlertSelector' declares the selector 'presentViewController...'

.m 

#import "AlertSelector.h"

@implementation AlertSelector : NSObject

- (void) someMethod {
    NSLog(@"SomeMethod Ran");
    UIAlertController * view=   [UIAlertController
                             alertControllerWithTitle:@"My Title"
                             message:@"Select you Choice"
                             preferredStyle:UIAlertControllerStyleActionSheet];

    UIAlertAction* ok = [UIAlertAction
                     actionWithTitle:@"OK"
                     style:UIAlertActionStyleDefault
                     handler:^(UIAlertAction * action)
                     {
                         //Do some thing here
                         [view dismissViewControllerAnimated:YES completion:nil];

                     }];
    UIAlertAction* cancel = [UIAlertAction
                         actionWithTitle:@"Cancel"
                         style:UIAlertActionStyleDefault
                         handler:^(UIAlertAction * action)
                         {
                             [view dismissViewControllerAnimated:YES completion:nil];

                         }];

[view addAction:ok];
[view addAction:cancel];
[self presentViewController:view animated:YES completion:nil];
}

.h

@interface AlertSelector : NSObject

@property (strong, nonatomic) id someProperty;

- (void) someMethod;

@end

From Swift

var instanceOfCustomObject: AlertSelector = AlertSelector()
    instanceOfCustomObject.someProperty = "Hello World"
    print(instanceOfCustomObject.someProperty)
    instanceOfCustomObject.someMethod()

Upvotes: 2

Views: 383

Answers (3)

E-Riddie
E-Riddie

Reputation: 14780

This has nothing to do with bridging header. It's the UIViewController which implements presentViewController: not NSObject, therefore the compiler complains, because the method presentViewController: is not present on NSObject's interface.

Possible Solution

Either implement the presentViewController: yourself (which is a difficult task) or let the AlertSelector extend from UIViewController

.h

@interface AlertSelector : UIViewController

Upvotes: 0

gnasher729
gnasher729

Reputation: 52548

presentViewController is a method of UIViewController. Your AlertSelector class is not a UIViewController.

Upvotes: 0

TylerP
TylerP

Reputation: 9829

Your AlertSelector class is not a subclass of UIViewController. This is why you cannot call [self presentViewController:view animated:YES completion:nil]; from an instance of AlertSelector.

Add a view controller parameter to your someMethod method and present from that instead of self.

Upvotes: 1

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